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COMM4AT

INDUSTRIAL COMPUTER SOURCE

COMM4AT

Card Type

Multi-I/O card

Chip Set

Unidentified

Maximum Onboard Memory

Unidentified

I/O Options

Serial ports (4 RS-232)

Hard Drives supported

None

Floppy drives supported

None

Data Bus

16-bit ISA

Card Size

Half-length

CONNECTIONS

Function

Label

37-pin octopus connector to four 25-pin RS-232 ports

CN1

USER CONFIGURABLE SETTINGS

Function

Label

Position

Multiple interrupt enabled

E1

Pins 3 & 4 closed

Anti-lockup feature enabled

E1

Pins 1 & 2 closed

BASE I/O ADDRESS SELECTION

Setting

SW1/1

SW1/2

SW1/3

SW1/4

SW1/5

SW1/6

SW1/7

SW1/8

000h

On

On

On

On

On

On

On

On

020h

On

On

On

On

On

On

On

Off

040h

On

On

On

On

On

On

Off

On

060h

On

On

On

On

On

On

Off

Off

080h

On

On

On

On

On

Off

On

On

1F60h

Off

Off

Off

Off

Off

On

Off

Off

1F80h

Off

Off

Off

Off

Off

Off

On

On

1FA0h

Off

Off

Off

Off

Off

Off

On

Off

1FC0h

Off

Off

Off

Off

Off

Off

Off

On

1FE0h

Off

Off

Off

Off

Off

Off

Off

Off

Note:

A total of 256 base address settings are available. The jumpers are a binary representation of the decimal memory addresses. SW1/1 is the Most Significant Bit and jumper SW1/8 is the Least Significant Bit. The jumpers have the following decimal values: SW1/1=4096, SW1/2=2048, SW1/3=1024, SW1/4=512, SW1/5=256, SW1/6=128, SW1/7=64, SW1/8=32. Turn off the switches and add the values of the switches to obtain the correct memory address. (Off=1, On=0)

SERIAL PORT INTERRUPT SELECTION

IRQ

Position

 

IRQ2

E1/pins 23 & 24 closed

IRQ3

E1/pins 21 & 22 closed

 

IRQ4

E1/pins 19 & 20 closed

 

IRQ5

E1/pins 17 & 18 closed

 

IRQ6

E1/pins 15 & 16 closed

 

IRQ7

E1/pins 13 & 14 closed

 

IRQ10

E1/pins 11 & 12 closed

 

IRQ11

E1/pins 9 & 10 closed

 

IRQ12

E1/pins 7 & 8 closed

 

IRQ15

E1/pins 5 & 6 closed